5. Epigenetic Inclusions
An inclusion, in gemmology, can be used to define several scenarios. It could mean either two crystals enclosed within one another; a cavity found within an enclosed crystal that may contain gas, a liquid or another crystal; or a seemingly optical illusion. However, an epigenetic inclusion only occurs in the fractures of a fully crystallised host mineral, where the inclusion crystallises in fractures within the limited space of the host mineral. This, in turn, can form flat crystals or aggregates, which are groups of smaller sized gems fused into a single piece, which prevents the crystal from forming the way it was meant to.
